kc3-lang/gnulib/m4/log2l.m4

• Show log

  Commit

• Hash : a9b04535
  Author :
  Date : 2017-07-13T21:06:02
  

  Improve cross-compilation guesses for native Windows.
  
  * m4/btowc.m4 (gl_FUNC_BTOWC): Add cross-compilation guess for native
  Windows.
  * m4/c-stack.m4 (AC_SYS_XSI_STACK_OVERFLOW_HEURISTIC): Likewise.
  * m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Likewise.
  * m4/canonicalize.m4 (gl_FUNC_REALPATH_WORKS): Likewise.
  * m4/cbrtf.m4 (gl_FUNC_CBRTF_WORKS): Likewise.
  * m4/cbrtl.m4 (gl_FUNC_CBRTL, gl_FUNC_CBRTL_WORKS): Likewise.
  * m4/ceil.m4 (gl_FUNC_CEIL): Likewise.
  * m4/ceilf.m4 (gl_FUNC_CEILF): Likewise.
  * m4/ceill.m4 (gl_FUNC_CEILL): Likewise.
  * m4/d-ino.m4 (gl_CHECK_TYPE_STRUCT_DIRENT_D_INO): Likewise.
  * m4/dup.m4 (gl_FUNC_DUP): Likewise.
  * m4/expl.m4 (gl_FUNC_EXPL): Likewise.
  * m4/exp2.m4 (gl_FUNC_EXP2_WORKS): Likewise.
  * m4/exp2l.m4 (gl_FUNC_EXP2L): Likewise.
  * m4/expm1.m4 (gl_FUNC_EXPM1): Likewise.
  * m4/expm1f.m4 (gl_FUNC_EXPM1F_WORKS): Likewise.
  * m4/exponentl.m4 (gl_LONG_DOUBLE_EXPONENT_LOCATION): Likewise.
  * m4/fabsl.m4 (gl_FUNC_FABSL_WORKS): Likewise.
  * m4/fchdir.m4 (gl_FUNC_FCHDIR): Likewise.
  * m4/fcntl-o.m4 (gl_FCNTL_O_FLAGS): Likewise.
  * m4/float_h.m4 (gl_FLOAT_H): Likewise.
  * m4/floor.m4 (gl_FUNC_FLOOR): Likewise.
  * m4/floorf.m4 (gl_FUNC_FLOORF): Likewise.
  * m4/fma.m4 (gl_FUNC_FMA_WORKS): Likewise.
  * m4/fmaf.m4 (gl_FUNC_FMAF_WORKS): Likewise.
  * m4/fmal.m4 (gl_FUNC_FMAL_WORKS): Likewise.
  * m4/fmod.m4 (gl_FUNC_FMOD): Likewise.
  * m4/fmodf.m4 (gl_FUNC_FMODF): Likewise.
  * m4/fmodl.m4 (gl_FUNC_FMODL): Likewise.
  * m4/frexp.m4 (gl_FUNC_FREXP_WORKS): Likewise.
  * m4/frexpf.m4 (gl_FUNC_FREXPF_WORKS): Likewise.
  * m4/ftello.m4 (gl_FUNC_FTELLO): Likewise.
  * m4/gettimeofday.m4 (gl_FUNC_GETTIMEOFDAY_CLOBBER): Likewise.
  * m4/hypot.m4 (gl_FUNC_HYPOT): Likewise.
  * m4/hypotf.m4 (gl_FUNC_HYPOTF, gl_FUNC_HYPOTF_WORKS): Likewise.
  * m4/hypotl.m4 (gl_FUNC_HYPOTL, gl_FUNC_HYPOTL_WORKS): Likewise.
  * m4/ilogb.m4 (gl_FUNC_ILOGB_WORKS): Likewise.
  * m4/ilogbf.m4 (gl_FUNC_ILOGBF_WORKS): Likewise.
  * m4/isfinite.m4 (gl_ISFINITEL_WORKS): Likewise.
  * m4/isinf.m4 (gl_ISINFL_WORKS): Likewise.
  * m4/isnanf.m4 (gl_ISNANF_WORKS): Likewise.
  * m4/isnanl.m4 (gl_FUNC_ISNANL_WORKS): Likewise.
  * m4/ldexpl.m4 (gl_FUNC_LDEXPL_WORKS): Likewise.
  * m4/log.m4 (gl_FUNC_LOG, gl_FUNC_LOG_WORKS): Likewise.
  * m4/logf.m4 (gl_FUNC_LOGF, gl_FUNC_LOGF_WORKS): Likewise.
  * m4/logl.m4 (gl_FUNC_LOGL_WORKS): Likewise.
  * m4/log10.m4 (gl_FUNC_LOG10, gl_FUNC_LOG10_WORKS): Likewise.
  * m4/log10f.m4 (gl_FUNC_LOG10F, gl_FUNC_LOG10F_WORKS): Likewise.
  * m4/log10l.m4 (gl_FUNC_LOG10L_WORKS): Likewise.
  * m4/log1p.m4 (gl_FUNC_LOG1P): Likewise.
  * m4/log1pf.m4 (gl_FUNC_LOG1PF, gl_FUNC_LOG1PF_WORKS): Likewise.
  * m4/log1pl.m4 (gl_FUNC_LOG1PL): Likewise.
  * m4/log2.m4 (gl_FUNC_LOG2, gl_FUNC_LOG2_WORKS): Likewise.
  * m4/log2f.m4 (gl_FUNC_LOG2F, gl_FUNC_LOG2F_WORKS): Likewise.
  * m4/log2l.m4 (gl_FUNC_LOG2L_WORKS): Likewise.
  * m4/logb.m4 (gl_FUNC_LOGB_WORKS): Likewise.
  * m4/logbf.m4 (gl_FUNC_LOGBF_WORKS): Likewise.
  * m4/logbl.m4 (gl_FUNC_LOGBL_WORKS): Likewise.
  * m4/lstat.m4 (gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK): Likewise.
  * m4/mbrtowc.m4 (gl_MBRTOWC_EMPTY_INPUT, gl_MBRTOWC_C_LOCALE): Likewise.
  * m4/mkdir.m4 (gl_FUNC_MKDIR): Likewise.
  * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): Likewise.
  * m4/mktime.m4 (gl_FUNC_MKTIME_WORKS): Likewise.
  * m4/modf.m4 (gl_FUNC_MODF): Likewise.
  * m4/modff.m4 (gl_FUNC_MODFF): Likewise.
  * m4/modfl.m4 (gl_FUNC_MODFL): Likewise.
  * m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Likewise.
  * m4/perror.m4 (gl_FUNC_PERROR): Likewise.
  * m4/popen.m4 (gl_FUNC_POPEN): Likewise.
  * m4/posix_spawn.m4 (gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN): Likewise.
  * m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Likewise.
  * m4/putenv.m4 (gl_FUNC_PUTENV): Likewise.
  * m4/regex.m4 (gl_REGEX): Likewise.
  * m4/remainder.m4 (gl_FUNC_REMAINDER): Likewise.
  * m4/remainderf.m4 (gl_FUNC_REMAINDERF,
  gl_FUNC_REMAINDERF_WORKS): Likewise.
  * m4/remainderl.m4 (gl_FUNC_REMAINDERL,
  gl_FUNC_REMAINDERL_WORKS): Likewise.
  * m4/rename.m4 (gl_FUNC_RENAME): Likewise.
  * m4/rmdir-errno.m4 (gl_FUNC_RMDIR_NOTEMPTY): Likewise.
  * m4/rmdir.m4 (gl_FUNC_RMDIR): Likewise.
  * m4/round.m4 (gl_FUNC_ROUND): Likewise.
  * m4/roundf.m4 (gl_FUNC_ROUNDF): Likewise.
  * m4/roundl.m4 (gl_FUNC_ROUNDL): Likewise.
  * m4/signbit.m4 (gl_SIGNBIT): Likewise.
  * m4/sleep.m4 (gl_FUNC_SLEEP): Likewise.
  * m4/sqrtl.m4 (gl_FUNC_SQRTL_WORKS): Likewise.
  * m4/stdint.m4 (gl_STDINT_H): Likewise.
  * m4/strerror.m4 (gl_FUNC_STRERROR_0): Likewise.
  * m4/strncat.m4 (gl_FUNC_STRNCAT): Likewise.
  * m4/strtod.m4 (gl_FUNC_STRTOD): Likewise.
  * m4/strtoimax.m4 (gl_FUNC_STRTOIMAX): Likewise.
  * m4/strtok_r.m4 (gl_FUNC_STRTOK_R): Likewise.
  * m4/trunc.m4 (gl_FUNC_TRUNC): Likewise.
  * m4/truncf.m4 (gl_FUNC_TRUNCF): Likewise.
  * m4/truncl.m4 (gl_FUNC_TRUNCL): Likewise.
  * m4/tsearch.m4 (gl_FUNC_TSEARCH): Likewise.
  * m4/tzset.m4 (gl_FUNC_TZSET_CLOBBER): Likewise.
  * m4/ungetc.m4 (gl_FUNC_UNGETC_WORKS): Likewise.
  * m4/unlink-busy.m4 (gl_FUNC_UNLINK_BUSY_TEXT): Likewise.
  * m4/unlink.m4 (gl_FUNC_UNLINK): Likewise.
  * m4/usleep.m4 (gl_FUNC_USLEEP): Likewise.
  * m4/utimes.m4 (gl_FUNC_UTIMES): Likewise.
  * m4/wcrtomb.m4 (gl_FUNC_WCRTOMB): Likewise.
  * m4/wcsrtombs.m4 (gl_WCSRTOMBS_TERMINATION, gl_WCSRTOMBS_NULL):
  Likewise.
  * m4/wctob.m4 (gl_FUNC_WCTOB): Likewise.
  * m4/chown.m4 (AC_FUNC_CHOWN): Add cross-compilation guess for native
  Windows. Enable also on Autoconf 2.70.
  * m4/printf.m4 (gl_PRINTF_SIZES_C99, gl_PRINTF_LONG_DOUBLE,
  gl_PRINTF_INFINITE, gl_PRINTF_INFINITE_LONG_DOUBLE,
  gl_PRINTF_DIRECTIVE_A, gl_PRINTF_DIRECTIVE_F, gl_PRINTF_DIRECTIVE_N,
  gl_PRINTF_DIRECTIVE_LS, gl_PRINTF_FLAG_LEFTADJUST, gl_PRINTF_FLAG_ZERO,
  gl_SNPRINTF_TRUNCATION_C99, gl_SNPRINTF_RETVAL_C99,
  gl_SNPRINTF_DIRECTIVE_N, gl_SNPRINTF_SIZE1): Add cross-compilation guess
  for native Windows.
  (gl_PRINTF_POSITIONS, gl_PRINTF_FLAG_GROUPING,
  gl_VSNPRINTF_ZEROSIZE_C99): Add comment.
  

Download

• m4/log2l.m4

• # log2l.m4 serial 2
  dnl Copyright (C) 2010-2017 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_FUNC_LOG2L],
  [
    AC_REQUIRE([gl_MATH_H_DEFAULTS])
    AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
    AC_REQUIRE([gl_FUNC_LOG2])
  
    dnl Persuade glibc <math.h> to declare log2l().
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  
    dnl Test whether log2l() exists. Assume that log2l(), if it exists, is
    dnl defined in the same library as log2().
    save_LIBS="$LIBS"
    LIBS="$LIBS $LOG2_LIBM"
    AC_CHECK_FUNCS([log2l])
    LIBS="$save_LIBS"
    if test $ac_cv_func_log2l = yes; then
      LOG2L_LIBM="$LOG2_LIBM"
      HAVE_LOG2L=1
      dnl Also check whether it's declared.
      dnl IRIX 6.5 has log2l() in libm but doesn't declare it in <math.h>.
      AC_CHECK_DECL([log2l], , [HAVE_DECL_LOG2L=0], [[#include <math.h>]])
  
      save_LIBS="$LIBS"
      LIBS="$LIBS $LOG2L_LIBM"
      gl_FUNC_LOG2L_WORKS
      LIBS="$save_LIBS"
      case "$gl_cv_func_log2l_works" in
        *yes) ;;
        *) REPLACE_LOG2L=1 ;;
      esac
    else
      HAVE_LOG2L=0
      HAVE_DECL_LOG2L=0
    fi
    if test $HAVE_LOG2L = 0 || test $REPLACE_LOG2L = 1; then
      dnl Find libraries needed to link lib/log2l.c.
      if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then
        LOG2L_LIBM="$LOG2_LIBM"
      else
        AC_REQUIRE([gl_FUNC_ISNANL])
        AC_REQUIRE([gl_FUNC_FREXPL])
        AC_REQUIRE([gl_FUNC_LOGL])
        LOG2L_LIBM=
        dnl Append $ISNANL_LIBM to LOG2L_LIBM, avoiding gratuitous duplicates.
        case " $LOG2L_LIBM " in
          *" $ISNANL_LIBM "*) ;;
          *) LOG2L_LIBM="$LOG2L_LIBM $ISNANL_LIBM" ;;
        esac
        dnl Append $FREXPL_LIBM to LOG2L_LIBM, avoiding gratuitous duplicates.
        case " $LOG2L_LIBM " in
          *" $FREXPL_LIBM "*) ;;
          *) LOG2L_LIBM="$LOG2L_LIBM $FREXPL_LIBM" ;;
        esac
        dnl Append $LOGL_LIBM to LOG2L_LIBM, avoiding gratuitous duplicates.
        case " $LOG2L_LIBM " in
          *" $LOGL_LIBM "*) ;;
          *) LOG2L_LIBM="$LOG2L_LIBM $LOGL_LIBM" ;;
        esac
      fi
    fi
    AC_SUBST([LOG2L_LIBM])
  ])
  
  dnl Test whether log2l() works.
  dnl On OSF/1 5.1, log2l(-0.0) is NaN.
  AC_DEFUN([gl_FUNC_LOG2L_WORKS],
  [
    AC_REQUIRE([AC_PROG_CC])
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
    AC_CACHE_CHECK([whether log2l works], [gl_cv_func_log2l_works],
      [
        AC_RUN_IFELSE(
          [AC_LANG_SOURCE([[
  #include <math.h>
  #ifndef log2l /* for AIX */
  extern
  #ifdef __cplusplus
  "C"
  #endif
  long double log2l (long double);
  #endif
  volatile long double x;
  volatile long double y;
  int main ()
  {
    /* This test fails on OSF/1 5.1.  */
    x = -0.0L;
    y = log2l (x);
    if (!(y + y == y))
      return 1;
    return 0;
  }
  ]])],
          [gl_cv_func_log2l_works=yes],
          [gl_cv_func_log2l_works=no],
          [case "$host_os" in
             osf*)   gl_cv_func_log2l_works="guessing no" ;;
                     # Guess yes on native Windows.
             mingw*) gl_cv_func_log2l_works="guessing yes" ;;
             *)      gl_cv_func_log2l_works="guessing yes" ;;
           esac
          ])
      ])
  ])
  

Download